HomeMy WebLinkAboutFLAT ROOF NAILING CALCULATIONSr-
Luis F ORTEGA, PL '�- -
Civ4Www ral Engineer
9, 2018
iij Lucie County,
. !fing & Zoning Department
rt! fierce, Florida
SCANNED
By
St. Lucia couw
Re: FLAT ROOF ENHANCE NAILING CALCULATION
Rowe Residence
701 S 33 Street
Fort Pierce, FL
Con ctor: JJ Quality Builders of the Palm Beaches
Building Official:
ing please find the summary of the roof nailing pattern computations (attached) for above
ced building, per RAS No. 117 of the 2017-FBC:
DATA:
a. Per N.O.A # 17-0824.11 for MULEH DE Nail Base attached to wood deck with 1'/4 R.S.
i
Nails Tin Caps @ 8" o/c at laps & in (3) rows 8" o/c in the field of the roof, for Allow. Design
Press:-52.5—sf.
b. RAS No. 128: Min. wind uplift pressures (PSF) for flat roof, Cat. II, Exp. C, 20' high bldg.:
° ,Field: 43, Perimeter: 72, Comer.108.
CALC:
' Fastener Value (W 25.8 lbs.
FASTENER SPACINGS:
a.. , Field: use 9" o/c @ laps & 3-rows staggered @ 9" o1c in mid sheet.
b. Perimeter. use 6" o/c @laps & 3-rows staggered @ 6" o/cin mid -cheek
c. Corner: use 4" o/c @ laps & 3-rows staggered @ 4" o/c in mid -sheet
If y "u have any questions or concerns in regards to the above matter, please do not hesitate to contact our
offi at (954) 937-2484.
Ortega, P.E.
61145
ST. LUCI C011NTy BUILDING VISION
REVIEWED FOR COMPLI CE
REVIEWED y
DATE l
PLANS A D PERMI
SITE OR NO INSPECTIONTS E KEPT ON ]OB
)WILL BE MADE
FILE COPY
1 OF 1
116 HIDDEN CT ROAD, HOLLYWOOD, FLORIDA 33023 TEL: 964,937.2484 FAX: 954.962.1801
RAS No.117
STANDARD REQUIREMENTS FOR MECHANICAL ATTACHMENT OF
ANCHOR/BASE SHEET TO SUBSTRATE
08/09/2018
Rowe Residence
701 S 33 St, Fort Pierce, FL
Anchor/Base Sheet: Nail Base, 39" wide. Max. design press=-52.5 psf attached to deck with
11/4 R.S. Nails @ 8" % at laps and in 3 rows 8" .% in the Field
Minin i um find Uplift Pressures (PSF) for Flat Roof Cat 11, Exp C, 2W Height per RAS No.128 (2017)
Field: 43 Perimeter: 72 Comer: 108
1. Nu
Net M
Net L
a.
b.
35 inch =
34.29 ft
Lap Row-- 51.43
er Rows= 154.29
205.71
ner Value (fv)= 25.76 lbs.
3. Anchor /Base Sheet fasti
FS-fy11144/(P-RS)
RS= n width/# of rows=
a. Fiel'II 9.9
rt b. Petneter: 5.9
c. Corder: 3.9
2.92 ft
Square Feet/Fastener- 0.49
8.75 inch (Row Spacing)
FASTENER SPACINGS:
Use 9" % @ laps & 3-rows staggered @ 9" % in midsheet
Use 6" % @ laps & 3-rows staggered @ 6" % in midsheet
Use 4" % @ laps & 3-rows staggered @ 4" % in midsheet.